Splitting of the Dipole and Spin-Dipole Resonances
Sam M. Austin, E. Adamides, A. Galonsky, T. Nees, W. A. Sterrenburg, D. E. Bainum, J. Rapaport, E. Sugarbaker, C. C. Foster, C. D. Goodman, D. J. Horen, C. A. Goulding, M. B. Greenfield
Abstract
Cross sections for the 90,92,94Zr(p,n) reactions were measured at energies of 79.2 and 119.4 MeV. A phenomenological model was developed to describe the variation with bombarding energy of the position of the L=1 peak observed in these and other (p,n) reactions. The model yields the splitting between the giant dipole and giant spin dipole resonances. Values of these splittings are obtained for isotopes of Zr and Sn and for 208Pb.
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